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[Bug string/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
- From: "helugang at huawei dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 25 Nov 2019 12:46:43 +0000
- Subject: [Bug string/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
- Auto-submitted: auto-generated
- References: <bug-25131-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=25131
--- Comment #10 from helugang <helugang at huawei dot com> ---
Sorry for the truncated.
First,than you for your reply.
It seems the first thing is to find a way to improve the performance or on the
other hand to find the point which lead to the performance reduce.
We have tried to use the PLD instrction exactly as before in memcpy_imply.S,but
the issue remains.
Could you give some further advice about the improvement or further step about
cat the point.We notice the mechanism of memcpy in glibc is quite different
from 2.11 to 2.27.
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